Where does “teenden” come from?

teenden (Middle English) comes from Old English tendan, from Proto-Germanic tandijaną, from Proto-Germanic tinnaną, from Proto-Indo-European dendʰneti.

Ancestry of “teenden”, step by step

StepLanguageWordMeaning
1Old Englishtendanto kindle
2Proto-Germanictandijanąto kindle, to light on fire
3Proto-Germanictinnanąto burn
4Proto-Indo-Europeandendʰneti—
Every word from Proto-Indo-European dendʰneti →Every word from Proto-Germanic tinnaną →Every word from Proto-Germanic tandijaną →
teenden — Etymology, Origin & Word History | Etymology Explorer